IG_mult_open

This function creates a multimedia instance from memory.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_mult_open_mem( LPAT_VOID lpMem, AT_UINT memLen, LPHIGMULT lphMult );

Arguments:

Name	Type	Description
lpMem	LPAT_VOID	Pointer to data in memory to open.
memLen	AT_UINT	Length of data in memory in bytes.
lphMult	LPHIGMULT	Handle to multimedia instance.

Return Value:

Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.

Supported Raster Image Formats:

This function does not process image pixels.

Sample:

None

Example:

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/* Get a multimedia file's duration using a memory buffer / AT_ERRCOUNT nErrcount; / Number of errors on stack / HIGMULT hMult; / Multimedia instance handle / LPAT_VOID lpMem; / Memory buffer with multimedia data / AT_UINT memLen; / Length of data in memory buffer / AT_UINT numFrames; / Total number of frames in file / AT_UINT duration; / Duration of file in milliseconds */ nErrcount = IG_mult_open_mem(lpMem, memLen, &hMult); nErrcount = IG_mult_duration_get(hMult, &numFrames, &duration); nErrcount = IG_mult_close(hMult);

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/* Get a multimedia file's duration using a memory buffer */
AT_ERRCOUNT nErrcount;  /* Number of errors on stack */
HIGMULT hMult;          /* Multimedia instance handle */
LPAT_VOID lpMem;        /* Memory buffer with multimedia data */
AT_UINT memLen;         /* Length of data in memory buffer */
AT_UINT numFrames;      /* Total number of frames in file */
AT_UINT duration;       /* Duration of file in milliseconds */
nErrcount = IG_mult_open_mem(lpMem, memLen, &hMult);
nErrcount = IG_mult_duration_get(hMult, &numFrames, &duration);
nErrcount = IG_mult_close(hMult);

Remarks:

The memory must contain a complete multimedia file and remain accessible until the multimedia instance is closed.